Grit is a personality trait defined as perseverance and passion for long-term goals. The psychologist Angela Duckworth introduced the term in a landmark 2007 paper, and the concept quickly spread into education, military training, sports, and workplace culture. But the story of grit is more complicated than its popular reputation suggests, with ongoing debates about whether it is truly distinct from traits psychologists have studied for decades and how much it actually matters for success once you account for other factors.
What Grit Means in Psychology
In everyday language, “grit” suggests toughness or determination. In psychology, the definition is more specific. Duckworth and her colleagues defined grit as having both the stamina to keep working toward difficult goals over months and years (perseverance of effort) and the tendency to maintain the same top-level interests rather than constantly switching passions (consistency of interest). In Duckworth’s original research, grit accounted for roughly 4% of the variance in success outcomes across six different studies, including educational attainment, GPA among Ivy League students, retention at West Point, and ranking in the National Spelling Bee.1PubMed. Grit: perseverance and passion for long-term goals Four percent sounds small, but in personality research it is a meaningful slice, because success depends on so many different things at once.
The two components of grit are not interchangeable. Perseverance of effort captures the hard-work side: you keep pushing through setbacks, boredom, and fatigue. Consistency of interest captures the direction side: you stick with the same long-term ambition rather than jumping from one enthusiasm to the next. Research consistently finds that these two halves behave differently. In studies of athletes, for instance, perseverance of effort predicted how much deliberate practice a person accumulated and whether they reached higher skill levels, while consistency of interest predicted whether athletes resisted thoughts of quitting their sport altogether.2Psychology of Sport and Exercise. Comparing the contribution of conscientiousness, self-control, and grit to key criteria of sport expertise development In many populations, perseverance of effort turns out to be the stronger predictor of real-world performance, while consistency of interest often adds little predictive power on its own.
How Grit Is Measured
The standard tool for measuring grit is the Short Grit Scale, or Grit-S, an eight-item questionnaire developed by Duckworth and Patrick Quinn. It kept the two-factor structure of the original twelve-item scale but with improved statistical properties and fewer items.3PubMed. Development and validation of the short grit scale (grit-s) You rate statements like “I finish whatever I begin” and “I often set a goal but later choose to pursue a different one” on a five-point scale. Your overall grit score is simply the average of your responses, with a higher number reflecting more grit.
The Grit-S has been validated in a wide range of populations, from American students and military cadets to Chinese physical education teachers, where it showed acceptable internal consistency and correlated in expected ways with personality traits like self-control and the Big Five.4Current Psychology. Validation of the short grit scale (Grit-S) in Chinese physical education teachers That said, the scale is not without measurement concerns. One psychometric evaluation found that the Grit-S is essentially measuring one thing rather than two cleanly separate dimensions, and that its consistency-of-interest items share enough overlap with self-control measures to raise questions about redundancy.5PubMed Central. A Psychometric Evaluation of the Short Grit Scale: A Closer Look at its Factor Structure and Scale Functioning In practical terms, this means that when someone fills out the Grit-S, what you are mostly learning about is how hardworking and persistent they report themselves to be.
Where Grit Shows Up in Real Life
The domain where grit has been studied most intensively is military training, especially at West Point. Duckworth’s original work found that grit scores predicted which cadets survived the brutal initial summer training program (known as “Beast Barracks”), even after accounting for SAT scores, class rank, and physical fitness. Later research confirmed and extended this: in two graduating classes, the perseverance-of-effort component predicted not just survival through that first summer but also longer-term persistence across the full four-year program, outperforming the academy’s own composite admissions score for predicting who actually graduated.6Military Psychology. Grit and Hardiness as Predictors of Performance Among West Point Cadets A more recent study showed grit continued to predict West Point graduation even during the disruption and uncertainty of the COVID-19 pandemic.7PubMed Central. Grit and uncertainty: Grit predicts performance and West Point graduation during pandemic conditions
In the spelling-bee study from the original 2007 paper, grit predicted which competitors advanced to later rounds. The mechanism turned out to be deliberate practice: grittier spellers spent more time on the tedious, solitary work of studying word origins and testing themselves, which is less enjoyable than being quizzed by a parent but more effective for performance. Grit’s effect on final placement was largely explained by how much deliberate practice a competitor put in.8Social Psychological and Personality Science. Deliberate Practice Spells Success This finding matters because it suggests grit is not some mysterious inner fire. It works through a mundane behavioral pathway: gritty people simply practice more, especially the kinds of practice that are effortful and boring.
In organizational settings, grit has been linked to better workplace performance, particularly during periods of uncertainty. A study using close to 900 survey responses found a positive association between grit and organizational performance, and that effect was stronger when the work environment was supportive and leaders used a transformational style.9PubMed Central. The Role of Grit in Organizational Performance During a Pandemic The takeaway is that grit does not operate in a vacuum; context matters.
The Conscientiousness Problem
The biggest criticism of grit as a concept is that it might just be a repackaging of conscientiousness, one of the well-established Big Five personality traits that psychologists have studied for decades. Conscientiousness encompasses self-discipline, orderliness, dependability, and achievement striving. If grit is just conscientiousness with a catchier name, then psychologists have not discovered something new; they have committed what is called a “jangle fallacy,” using a different name for an existing thing.
Research has found a lot of support for this concern. One study using advanced factor-analytic methods showed that the factor structures of grit and conscientiousness strongly overlap. Both conscientiousness and the perseverance-of-effort component of grit predicted students’ grades, but grit did not add much beyond what conscientiousness already explained.10Journal of Research in Personality. Grit and conscientiousness: Another jangle fallacy Another study reached a similar verdict, finding that grit’s two subscales added little explanatory power for school achievement once personality, motivation, and engagement were already in the model.11Contemporary Educational Psychology. Does students’ grit predict their school achievement above and beyond their personality, motivation, and engagement?
Duckworth and her collaborators have pushed back, arguing that grit captures something conscientiousness does not: the long-term directional consistency of a person’s passions, not just their tendency to be organized and hardworking. But the data are mixed on whether that added ingredient actually does unique predictive work. In many studies, once you measure conscientiousness, measuring grit on top of it gives you little new information about who will succeed.
How Grit Differs from Self-Control
Self-control and grit are related but operate on different timescales. Self-control is about resisting moment-to-moment temptations: choosing to study instead of scrolling your phone, saying no to a second drink, going to the gym when you would rather sleep in. Grit is about maintaining commitment to a high-level goal over years or decades, through periods of failure, plateaus, and boredom. A person can have excellent self-control in daily life but still bounce between careers every two years; conversely, someone deeply committed to becoming a concert pianist might struggle with junk food or procrastination in other areas of life.12PubMed Central. Self-Control and Grit: Related but Separable Determinants of Success The distinction is useful even if the two traits are strongly correlated in practice.
The Growth Mindset Connection
A growth mindset, the belief that abilities can be developed through effort, is often discussed alongside grit. Research on adolescents found that grit and growth mindset are distinct traits that reinforce each other over time: having more grit at one time point predicted increases in growth mindset later, and vice versa.13PubMed Central. The development of grit and growth mindset during adolescence A meta-analysis pooling results across studies found moderate positive correlations between growth mindset and both grit as a whole and its individual components.14PubMed. A Meta-analysis of the relationship between growth mindset and grit
The relationship extends to family dynamics. Research on students and their parents found that when children perceived their parents as holding a growth mindset, the children were more likely to develop their own growth mindsets and higher self-efficacy, which in turn predicted greater perseverance of effort in subjects like math.15PubMed. The Longitudinal Relationship Between Perceived Parental Growth Mindset and Children’s Math-Specific Grit The practical implication is that the beliefs people around you hold about whether talent is fixed or malleable appear to shape how persistently you work toward your own goals.
Nature and Nurture Behind Grit
Like most personality traits, grit is partly genetic and partly shaped by experience. A twin study estimated that the heritability of the perseverance-of-effort component was about 37%, while consistency of interest was lower at around 20%. Shared environment, meaning the family conditions twins grow up in together, had negligible influence. The remaining two-thirds of the variance came from non-shared environmental influences, the unique experiences that make siblings different from each other.16PubMed Central. True grit and genetics: predicting academic achievement from personality
A separate twin study using a large UK sample found that genetic factors accounted for about 58% of the variation in grit, and that the genetic overlap between grit, self-control, and school performance was substantial. In other words, much of the reason gritty kids do well in school is that the same genetic influences that make a child grittier also make them better at self-regulation and academic tasks.17PubMed Central. Self-control and grit are associated with school performance mainly because of shared genetic effects This does not mean grit is fixed at birth. Heritability estimates describe population-level variation, not an individual’s ceiling. But it does mean that telling people to “just be grittier” oversimplifies something with real biological underpinnings.
What Happens in the Brain
Neuroimaging research has started to identify brain signatures of grit. One study measured spontaneous brain activity in college students and found that grit was negatively associated with resting-state activity in the right dorsomedial prefrontal cortex, a region involved in self-referential thinking, mind-wandering, and considering future plans. This association held even after controlling for intelligence and all five major personality traits. The researchers also found that activity in this brain region partially mediated the link between grit and academic performance, suggesting that grittier individuals may spend less mental energy on aimless rumination and more on focused goal pursuit.18PubMed Central. Grit and the brain: spontaneous activity of the dorsomedial prefrontal cortex mediates the relationship between the trait grit and academic performance This is still early-stage research from a single imaging study, but it provides an initial biological anchor for what had been a purely self-report-based construct.
Grit Does Not Increase Steadily with Age
You might assume that people naturally become grittier as they get older, accumulating life experience and discipline. The data suggest otherwise. A study of older adults found no meaningful relationship between grit scores and age, even after controlling for education. There was also no difference between men and women. Grit did, however, correlate with total years of education.19PubMed Central. Grit and Successful Aging in Older Adults The implication is that grit is not something that simply accumulates with time. It appears to be a relatively stable trait once established, though it can be influenced by the kinds of sustained challenges that higher education tends to involve.
Cultural Differences in How Grit Works
Most grit research has been conducted in Western, individualistic countries, and there is evidence that the concept does not translate cleanly across cultures. A large cross-national study found that the full grit construct, with both perseverance and consistency of interest functioning together, was supported in individualistic countries but not in collectivistic countries in Latin America and Asia.20PubMed. Is grit relevant to well-being and strengths? Evidence across the globe for separating perseverance of effort and consistency of interests In cultures where goals are more communally defined and where switching paths might reflect family obligation rather than personal fickleness, the consistency-of-interest component behaves differently.
Socioeconomic context also shapes what grit means. Research using cross-cultural data found a negative association between education level (both one’s own and one’s parents’) and consistency of interest, suggesting that sticking with a single path may serve as a psychological resource for people who lack other advantages.21Socius: Sociological Research for a Dynamic World. What Can Sociology Say About Grit? A Cross-Cultural Exploration of the Relationships between Socioeconomic Status, Sense of Control, and Grit Critics of the grit narrative worry that emphasizing individual perseverance can distract from structural barriers. A study of adolescents’ well-being noted that while promoting grit is valuable, focusing solely on individual traits risks overlooking the need to address structural inequalities in opportunity.22PubMed Central. How does family economic background shape adolescents’ present- and future-oriented well-being? Roles of perceived discrimination and grit
Can You Build Grit on Purpose
Given the heritability findings and the overlap with longstanding personality traits, a fair question is whether grit can be deliberately developed. The evidence is thin but cautiously encouraging. A middle school intervention that focused on building what the researchers called “mental toughness,” combining goal-setting, perseverance exercises, and internal locus-of-control training, found significant increases in grit scores among the students who started with the lowest levels. Those gains were associated with improved academic performance.23Psychology in the Schools. Building mental toughness: A middle school intervention to increase grit, locus of control, and academic performance
Beyond formal interventions, the deliberate-practice research offers a practical lever. If grit works partly by driving people to engage in more and better practice, then structuring environments to make effortful practice easier and more accessible could produce grit-like outcomes even in people who would not score especially high on the Grit-S. Coaches, teachers, and managers who build routine practice into their programs may be doing more for long-term performance than any motivational speech about perseverance. The workplace research supports this framing too: a supportive climate and strong leadership strengthened the link between grit and performance, meaning that even among people with the same level of grit, those in better environments got more out of it.24PubMed Central. The Role of Grit in Organizational Performance During a Pandemic
When Grit Might Actually Hurt
One underexplored angle is that grit’s consistency-of-interest component, sticking doggedly with a single long-term goal, is not always adaptive. People who refuse to disengage from failing pursuits can waste years on paths that are not working. Psychologists studying goal disengagement have found that the ability to abandon unreachable goals and redirect energy is important for well-being. Someone who scores very high on consistency of interest might persist with a career that is making them miserable, not because persistence is serving them but because their personality makes it hard to let go. The grit framework does not distinguish between productive persistence and stubborn escalation of commitment to a losing cause.
This is especially relevant in contexts where structural barriers make certain goals functionally unattainable regardless of effort. Telling a student to stay gritty when the obstacles they face are systemic rather than personal can feel more like blame than encouragement. The most honest reading of the grit literature is that perseverance of effort is generally useful, but consistency of interest is a double-edged trait whose value depends heavily on whether the goal in question is actually achievable given the person’s circumstances.